Repositorio UMAYOR: Envíos recientes
Mostrando ítems 3201-3220 de 8245
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Prácticas docentes en escuelas multiculturales: entre la continuidad y la superación del modelo monocultural
(Chile. Universidad Mayor, 2019-12)Este artículo tiene por objetivo sistematizar y analizar prácticas que implementan profesores e instituciones escolares en contextos de aulas multiculturales en tres comunas de la Región Metropolitana de Chile, con el ... -
Advancements in the Synthesis of Building Block Materials: Experimental Evidence and Modeled Interpretations of the Effect of Na and K on Imogolite Synthesis
(AMER CHEMICAL SOC, 2017)The effects of Na/K substitution during the synthesis of imogolite nanotubes (NTs) were studied using a combination of structural and surface analyses. These were complemented with molecular dynamics (MD) and DFT computational ... -
Macroscopic nonclassical-state preparation via postselection
(American Physical Society, 2017)Macroscopic quantum superposition states are fundamental to test the classical-quantum boundary and present suitable candidates for quantum technologies. Although the preparation of such states has already been realized, ... -
Stimulated Raman adiabatic control of a nuclear spin in diamond
(American Physical Society, 2017)Coherent manipulation of nuclear spins is a highly desirable tool for both quantum metrology and quantum computation. However, most of the current techniques to control nuclear spins lack fast speed, impairing their ... -
The power of a control qubit in weak measurements
(NATURE PUBLISHING GROUP, 2017)In the late 80 s, a curious effect suggested by Aharanov et al. was found to lead to an anomalous amplification based on quantum measurements of weakly coupled systems. In this paper, we investigate the quantum control of ... -
Draft genome of Chilean honeybee (Apis mellifera) gut strain Lactobacillus kunkeei MP2
(American Society for Microbiology, 2014)Here, we report the first draft genome sequence of Lactobacillus kunkeei strain MP2, isolated from a Chilean honeybee gut. The sequenced genome has a total size of 1.58 Mb distributed into 44 contigs and 1,356 protein-coding ... -
Remnants of native forests support carnivore diversity in the vineyard landscapes of central Chile
(Cambridge University Press, 2018-03)Carnivores play an important role in ecosystem functioning as apex predators. However, most carnivore species are threatened or have been extirpated in human-dominated landscapes. The Mediterranean region of central Chile ... -
On the proportional abundance of species: Integrating population genetics and community ecology
(Nature Publishing Group, 2017)The frequency of genes in interconnected populations and of species in interconnected communities are affected by similar processes, such as birth, death and immigration. The equilibrium distribution of gene frequencies ... -
Macroecological factors shape local-scale spatial patterns in agriculturalist settlements
(The Royal Society, 2017)Macro-scale patterns of human systems ranging from population distribution to linguistic diversity have attracted recent attention, giving rise to the suggestion that macroecological rules shape the assembly of human ... -
Inducing Porosity on Hollow Nanoparticles by Hypervelocity Impacts
(American Chemical Society, 2017)The large surface-to-volume ratio of hollow palladium nanoparticles (hNPs) offers room to improve their hydrogen storage capacity as well as their catalytic activity. However, a less explored possibility is to use, in ... -
Hillock formation on nanocrystalline diamond
(PERGAMON-ELSEVIER SCIENCE LTD, 2017)Hillock formation on nanocrystalline (nc) diamond under swift heavy ion irradiation is studied by means of classical molecular dynamics. The irradiation is simulated by means of a thermal spike model, the nc samples include ... -
Composites of electrochemically reduced graphene oxide and polythiophene and their application in supercapacitors
(Electrochemical Science Group, 2017)Composite films consisting of polythiophene (PTh) and graphene oxide (GO) were synthetized by electrochemical polymerization. Consequently, the GO was reduced via cyclic voltammetry to form a reduced composite (PTh/rGO), ... -
PAMAM Dendrimers as Support for the Synthesis of Gold Nanoparticles: Understanding the Effect of the Terminal Groups
(American Chemical Society, 2017)The interaction between hydroxyl-, aldehyde-, and amino-terminated PAMAM GO dendrimers with gold nanoclusters Au (n = 2, 4, 6, and 8) was studied theoretically at the DFT level. Different coordination sites were explored, ... -
The Cartesian plane in fifth grade students: Its re-signification on a specific situation
(UNESP - Universidade Estadual Paulista, Pró-Reitoria de Pesquisa Programa de Pós-Graduação em Educação Matemática, 2018)We report the results of a research on the re-signification of the Cartesian plane in a group of fifth-grade students of a Chilean school. The corresponding mathematical school discourse lacks meaningful teaching situations ... -
Colitis eosinofílica: Reporte de un caso clínico
(Sociedad Argentina de Gastroenterología, 2018)La colitis eosinofílica es una enfermedad poco frecuente. Forma parte de las gastroenteritis eosinofílicas, caracterizada por la infiltración eosinofílica de los tejidos. Puede afectar cualquier segmento del tubo digestivo, ... -
Effect of exogenous galactose on EPS production during bioleaching of pyrite by Acidithiobacillus ferrooxidans
(Trans Tech Publications, 2013)Extracellular polymeric substances (EPS) play an important role in the attachment of bacteria to sulphide minerals, biofilm formation and efficiency of the bioleaching process. Previous studies have suggested a potential ... -
La presencia del profesor y su influencia para una educación significativa: hacia un enfoque mindfulness en educación
(Universidad Austral de Chile. Facultad de Filosofía y Humanidades, 2018)Este artículo realiza una revisión teórica de las últimas investigaciones en relación a mindfulness en educación, especialmente relacionada con los aportes de esta práctica para el cuidado docente y para el cultivo de una ... -
Pitiriasis rosada en el embarazo: Reporte de caso
(Sociedad Chilena de Obstetricia y Ginecología, 2018)A pesar de que la Pitiriasis Rosada se considera una condición cutánea benigna, en el marco del embarazo, hay estudios que relacionan la aparición de esta patología con complicaciones asociadas en el feto. Metodología: Se ... -
Histological comparison of an allograft, a xenograft and alloplastic graft as bone substitute materials
(Ariesdue srl, 2016)Aim An allograft, a xenograft and an alloplastic graft, associated to sinus lift or ridge preservation procedures were histologically studied to evaluate their characteristics and to obtain the percentages of bone and ... -
Anatomía radiológica de la base de cráneo y los nervios craneales parte 1: Generalidades y base de cráneo
(Sociedad Chilena de Radiología, 2018)La anatomía de la base del cráneo es compleja. Numerosas estructuras neurovasculares vitales pasan a través de múltiples canales y formámenes de la base del cráneo. Con el avance de la tomografía computarizada (TC) y la ...